Lesser Black-backed Gull graellsii BTO FP-53854 , April 26 2004, EMO - Maasvlakte, the Netherlands (51.59N,04.02E). 

An adult ringed in Britain, now breeding in SW Holland. As soon as data on this individual are known, they will be added on this page.
It's not uncommon to find breeding LBBG wearing foreign rings in the colony. So far the following birds were found:
- Blue colour ringed from S Norway (intermedius).
- Metal ringed from Britain (graellsii).
- Metal ringed from Belgium (graellsii).

For differences on grey tone and brown hue in various LBBG populations, see Barth's research from the 60's.